Merge branch '22themes/master/lundquism' into 'master'

22themes/master/lundquism

Closes #22

See merge request !12

app/src/main/java/srct/whatsopen/views/activities/BaseThemeActivity.java

+package srct.whatsopen.views.activities;
+
+import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
+import android.content.res.Resources;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.support.v7.app.AppCompatActivity;
+import android.util.Log;
+import android.view.ContextThemeWrapper;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import srct.whatsopen.R;
+
+public abstract class BaseThemeActivity extends AppCompatActivity {
+    private static SharedPreferences prefs;
+
+    /**
+     * This is overriden so the theme can be changed, but it only works statically because
+     * <a href="https://developer.android.com/reference/android/view/ContextThemeWrapper#setTheme(int)">setTheme(int)</a>
+     * only applies after the contentView is set.
+     * @param bundle This is just your classic bundle
+     */
+    @Override
+    protected void onCreate(Bundle bundle) {
+        prefs = PreferenceManager.getDefaultSharedPreferences(this);
+        boolean dark = prefs.getBoolean("dark_theme", false);
+        // look at the udacity course. In this section you might want to reload,
+        // but this would mean every activity would have to set the right theme
+        Log.e("BaseThemeActivity", ".onCreate Recreate called?");
+
+        if(dark){
+            setTheme(R.style.darkTheme);
+            Log.d("BaseThemeActivity", ".onCreate() Theme is now dark");
+        }else{
+            setTheme(R.style.AppTheme);
+            Log.e("BaseThemeActivity", ".onCreate() Theme is now light");
+        }
+        super.onCreate(bundle);
+    }
+
+    /**
+     * This is overriden so that the theme can be changed dynamically. onStart is called, but
+     * the themes are wrong, onStart will call recreate, which will destroy the app and re-create it.
+     * This is a dangerous practice as it could destroy volatile data,
+     * but we don't have any volatile data so who cares. It will set the theme correctly.
+     */
+    @Override
+    protected void onStart(){
+        boolean dark = prefs.getBoolean("dark_theme", false);
+        int actTheme = getThemeID();
+
+        if(actTheme == R.style.darkTheme && !dark){
+            Log.d("BaseThemeActivity", ".onStart calling recreate to set to light");
+            recreate();
+        }else if (actTheme == R.style.AppTheme && dark){
+            Log.d("BaseThemeActivity", ".onStart calling recreate to set to dark");
+            recreate();
+        }else{
+            super.onStart();
+        }
+
+    }
+
+    /**
+        gets the current theme's resid:
+        <a href="https://stackoverflow.com/questions/7267852/android-how-to-obtain-the-resource-id-of-the-current-theme">
+        getThemeResId()</a>
+        note, the top answer on this page returns the default theme's ID, not the actual theme.
+
+        The stackoverflow warned about using getThemeResId because it was designed to be private.
+        @return returns the int resid of the current theme
+    */
+    private int getThemeID(){
+        int themeResId = 0;
+        String TAG = "BaseThemeActivity";
+        try {
+            Class<?> clazz = ContextThemeWrapper.class;
+            Method method = clazz.getMethod("getThemeResId");
+            method.setAccessible(true);
+            themeResId = (Integer) method.invoke(this);
+        } catch (NoSuchMethodException e) {
+            Log.e(TAG, ".getThemeID Failed to get theme resource ID", e);
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, ".getThemeID Failed to get theme resource ID", e);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, ".getThemeID Failed to get theme resource ID", e);
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, ".getThemeID Failed to get theme resource ID", e);
+        }
+        return themeResId;
+    }
+}

app/src/main/java/srct/whatsopen/views/activities/DetailActivity.java

@@ -42,7 +42,7 @@ import srct.whatsopen.presenters.FacilityPresenter;
 import srct.whatsopen.views.fragments.NotificationDialogFragment;
 
 
-public class DetailActivity extends AppCompatActivity implements FacilityView,
+public class DetailActivity extends BaseThemeActivity implements FacilityView,
         NotificationDialogFragment.NotificationDialogListener {
 
     @BindView(R.id.open_status)

app/src/main/java/srct/whatsopen/views/activities/MainActivity.java

@@ -27,7 +27,7 @@ import srct.whatsopen.views.adapters.FacilityListAdapter;
 import srct.whatsopen.views.adapters.FacilityListFragmentPagerAdapter;
 import srct.whatsopen.views.fragments.FacilityListFragment;
 
-public class MainActivity extends AppCompatActivity implements MainView {
+public class MainActivity extends BaseThemeActivity implements MainView {
 
     @BindView(R.id.progress_bar)
     ProgressBar mProgressBar;

app/src/main/java/srct/whatsopen/views/activities/SettingsActivity.java

 package srct.whatsopen.views.activities;
 
+import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.ActivityInfo;
 import android.content.res.Configuration;
@@ -7,6 +8,7 @@ import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.preference.PreferenceManager;
 import android.support.v7.widget.Toolbar;
+import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 
@@ -15,7 +17,7 @@ import srct.whatsopen.MyApplication;
 import srct.whatsopen.R;
 import srct.whatsopen.views.fragments.SettingsFragment;
 
-public class SettingsActivity extends AppCompatActivity {
+public class SettingsActivity extends BaseThemeActivity {
 
     private SharedPreferences mSharedPreferences;
 
@@ -72,6 +74,9 @@ public class SettingsActivity extends AppCompatActivity {
                     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
                         if(key.equals("turn_off_rotation_preference")) {
                             MyApplication.setRotation(SettingsActivity.this);
+                        }else if (key.equals("dark_theme")){
+                            Log.d("SettingsActivity", ".onSharedPreferenceChanged: Button was clicked to reset Themes.");
+                            recreate();
                         }
                     }
                 };

app/src/main/res/values-v21/styles.xml

@@ -14,4 +14,18 @@
 
     </style>
 
+    <!-- Dark theme when the dark button from the preferences settings screen is clicked,
+    the theme switches to this theme.-->
+    <style name="darkTheme" parent="Theme.AppCompat.NoActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+        <item name="android:colorControlHighlight">@color/tabButtonPressed</item>
+        <item name="android:homeAsUpIndicator">@drawable/ic_arrow_back_white</item>
+        <item name="preferenceTheme">@style/PreferenceThemeOverlay</item>
+        <item name="android:windowContentTransitions">true</item>
+
+    </style>
+
 </resources>
\ No newline at end of file

app/src/main/res/values/strings.xml

@@ -17,6 +17,7 @@
     <string name="title_turn_off_rotation">Turn off rotation</string>
     <string name="title_notification">Notifications</string>
     <string name="title_turn_off_vibrations">Turn off vibrations</string>
+    <string name="title_dark_theme">Dark theme</string>
     <string-array name="entries_list_view_information_preference">
         <item>Both</item>
         <item>Only for open Facilities</item>

app/src/main/res/values/styles.xml

@@ -11,4 +11,14 @@
         <item name="preferenceTheme">@style/PreferenceThemeOverlay</item>
     </style>
 
+    <!-- Dark theme when the dark button from the preferences settings screen is clicked,
+    the theme switches to this theme.-->
+    <style name="darkTheme" parent="Theme.AppCompat.NoActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+        <item name="android:homeAsUpIndicator">@drawable/ic_arrow_back_white</item>
+        <item name="preferenceTheme">@style/PreferenceThemeOverlay</item>
+    </style>
 </resources>

app/src/main/res/xml/settings.xml

@@ -17,6 +17,12 @@
             android:entries="@array/entries_list_view_default_tab_preference"
             android:entryValues="@array/entryvalues_list_view_default_tab_preference" />
 
+        <SwitchPreference
+            android:defaultValue="false"
+            android:key="dark_theme"
+            android:title="@string/title_dark_theme"
+            android:entries="@array/entries_list_view_default_tab_preference"
+            android:entryValues="@array/entryvalues_list_view_default_tab_preference" />
     </PreferenceCategory>
 
     <PreferenceCategory